GKN Loebro 306670 CV Joint Boot Kit - Front Left Inner

OE-Quality CV Boot Kit for Mercedes-Benz

GKN Loebro 306670 is an OE-quality TPE CV joint boot kit built for the front left inner position on select Mercedes-Benz GL-Class and M-Class applications. It is designed to match the original boot style and material used on the driveline, helping protect the CV joint from contamination and heat-related wear.

For Mercedes-Benz GL350, GL450, GL550, ML350, ML450, ML550, GL320, ML320, and ML500 applications, exact boot fitment matters. GKN Loebro 306670 is made for the joint-specific dimensions and uses TPE construction to handle the elevated temperatures common in modern driveline systems.

Key Features

• OE-quality CV joint boot kit from GKN Loebro
• Thermoplastic elastomer (TPE) boot material
• Solid, black boot design
• Front left inner position
• Joint end inside diameter: 3.385 in.
• Shaft end inside diameter: 1.062 in.
• Rib quantity: 1
• Non-vented boot construction
• Direct replacement for Mercedes-Benz driveline service applications

Detailed Description

GKN Loebro 306670 is a CV joint boot kit engineered for Mercedes-Benz front axle service where the original boot has torn, slipped, or become porous. The TPE material is selected for driveline environments that generate significant heat, and the boot is shaped for the joint-specific fit needed to protect the CV joint properly. This part cross-references Mercedes-Benz OE numbers 1643300885 and A1643300885 for the same application.

Compatible With 2010-2012 Mercedes-Benz GL350, front left inner; 2007-2012 Mercedes-Benz GL450, front left inner; 2008-2012 Mercedes-Benz GL550, front left inner; 2006-2011 Mercedes-Benz ML350, front left inner; 2010-2011 Mercedes-Benz ML450, front left inner; 2008-2011 Mercedes-Benz ML550, front left inner; 2007-2009 Mercedes-Benz GL320, front left inner; 2007-2009 Mercedes-Benz ML320, front left inner; and 2006-2007 Mercedes-Benz ML500, front left inner. Not valid for Offroad Package [430].

Common Repair Uses

• Replacing a torn CV axle boot on the front left inner joint
• Addressing grease loss caused by a split or slipped boot
• Restoring protection after boot cracking from heat or age
• Servicing a noisy or contaminated CV joint before further damage occurs
• Repairing driveline wear on Mercedes-Benz GL-Class and M-Class vehicles

Installation Notes and Tips

Confirm the original boot material and dimensions before installation, especially on vehicles originally equipped with TPE boots. Clean the joint thoroughly, inspect for contamination or wear, and verify the front left inner application before assembly. For Mercedes-Benz GL350, ML350, and related models, matching the boot to the joint is critical for proper sealing and long-term service.

Quality Assurance

GKN Automotive is a global driveline systems supplier, and Loebro boot kits are built to OE-style specifications for professional repair work. The 306670 kit is intended to restore the original protective function of the CV joint boot on the listed Mercedes-Benz applications.